“Roe v. Wade is a constitutional right that could be well-established,” Collins said on “State in the Union” on CNN. “And truth be told an expert than Chief Justice [John] Roberts asserted that repeatedly at his confirmation hearing.”

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Trump a while back said he wouldn’t ask potential Supreme court nominees about abortion rights – a departure from his stance for the campaign trail, when he said however nominate to the Supreme Court only those that oppose abortion.

“I think what he was quoted saying as the candidate might not have been informed with the legal counsel that they featuring,” Collins told Jake Tapper. “It can be inappropriate for him to inquire about a nominee how he / she would rule on a specific issue.”

Collins, who favors abortion rights, said she is not more comfortable with all 25 names on Trump’s shortlist for that Supreme court. The Maine senator is one of the few Republicans considered to be a possible vote against a Trump Top court nomination.

Speaking also on ABC’s “This Week,” Collins elaborated to be with her position for the 1973 abortion ruling, published by Justice Harry Blackmun.

“It has become established like a constitutional good for 46 years – 45 years, and was reaffirmed 26 in years past,” Collins said. “So a nominee position, if they respect precedent, will tell me a lot about whether or not they might overturn Roe v. Wade. A candidate of this import position that would overturn Roe v. Wade wouldn’t be acceptable in my experience, because which would indicate an activist agenda which i do not want to see a judge have. Knowning that would indicate if you ask me an explanation to respect precedent of fundamental tenet of your judicial system.”